Toward an integratred verification environment for embedded systems
MS'06 Proceedings of the 17th IASTED international conference on Modelling and simulation
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A Time-Action-Lock (TAL) is a state of a real-time system at which neither time can progress nor an action can occur. B. Behzad and O. Kozo presented a TAL-freeness detection method based on the geometry of Timed Automata. It is realized by means of translating the problem to Rational Presburger Sentences that has its drawback of inefficiency. In this paper, we present an algebraic approach for TALfreeness detection, which can dramatically improve the performance of the method previously published. Detailed correctness proofs and performance analysis are provided.